The buzzy I in Stockholm used to be restricted to the upper class (in Lidingö and Östermalm and stuff - one name for it is the "Lidingö-i"), but then it spread to other groups, perhaps because people are wankers and wanted to sound upper class.

If you listen to Stockholmers in the 80s and earlier, it's much less common.

Does your country have a resident recognizable poster trying to make it look bad? Finland has Kat, Sweden has the edge Swede(?).